[gimp/wip/nielsdg/vtable-typedefs] gir: Make use of typedefs for GimpProgressVtable vfuncs

[Niels De Graef <nielsdg src gnome org>]

commit ab47e5cdafc876731caa5a29a52255a7bc05f779
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Tue May 5 19:19:17 2020 +0200

    gir: Make use of typedefs for GimpProgressVtable vfuncs
    
    GObject introspection has issues handling random vfuncs (i.e. not part
    of a GObject). Most of all, it needs to be able to give these a name
    (so they can be used to cast in some higher level languages for
    example). As such, give each vfunc in `GimpProgressVtable` a separate
    typedef.

 libgimp/gimpprogress.h | 73 ++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 62 insertions(+), 11 deletions(-)
---
diff --git a/libgimp/gimpprogress.h b/libgimp/gimpprogress.h
index fdbb2089ed..113193d754 100644
--- a/libgimp/gimpprogress.h
+++ b/libgimp/gimpprogress.h
@@ -27,6 +27,62 @@
 
 G_BEGIN_DECLS
 
+/**
+ * GimpProgressVtableStartFunc:
+ * @message:
+ * @cancelable:
+ * @user_data: (closure):
+ *
+ * Starts the progress
+ */
+typedef void (* GimpProgressVtableStartFunc) (const gchar *message,
+                                              gboolean     cancelable,
+                                              gpointer     user_data);
+
+/**
+ * GimpProgressVtableEndFunc:
+ * @user_data: (closure):
+ *
+ * Ends the progress
+ */
+typedef void (* GimpProgressVtableEndFunc) (gpointer user_data);
+
+/**
+ * GimpProgressVtableSetTextFunc:
+ * @message:
+ * @user_data: (closure):
+ *
+ * Sets a new text on the progress.
+ */
+typedef void (* GimpProgressVtableSetTextFunc) (const gchar *message,
+                                                gpointer     user_data);
+
+/**
+ * GimpProgressVtableSetValueFunc:
+ * @percentage:
+ * @user_data: (closure):
+ *
+ * Sets a new percentage on the progress.
+ */
+typedef void (* GimpProgressVtableSetValueFunc) (gdouble  percentage,
+                                                 gpointer user_data);
+
+/**
+ * GimpProgressVtablePulseFunc:
+ * @user_data: (closure):
+ *
+ * Makes the progress pulse
+ */
+typedef void (* GimpProgressVtablePulseFunc) (gpointer user_data);
+
+/**
+ * GimpProgressVtableGetWindowFunc:
+ * @user_data: (closure):
+ *
+ * Returns: the ID of the window where the progress is displayed.
+ */
+typedef guint32 (* GimpProgressVtableGetWindowFunc) (gpointer user_data);
+
 
 typedef struct _GimpProgressVtable GimpProgressVtable;
 
@@ -49,17 +105,12 @@ typedef struct _GimpProgressVtable GimpProgressVtable;
  **/
 struct _GimpProgressVtable
 {
-  void    (* start)        (const gchar *message,
-                            gboolean     cancelable,
-                            gpointer     user_data);
-  void    (* end)          (gpointer     user_data);
-  void    (* set_text)     (const gchar *message,
-                            gpointer     user_data);
-  void    (* set_value)    (gdouble      percentage,
-                            gpointer     user_data);
-  void    (* pulse)        (gpointer     user_data);
-
-  guint32 (* get_window)   (gpointer     user_data);
+  GimpProgressVtableStartFunc     start;
+  GimpProgressVtableEndFunc       end;
+  GimpProgressVtableSetTextFunc   set_text;
+  GimpProgressVtableSetValueFunc  set_value;
+  GimpProgressVtablePulseFunc     pulse;
+  GimpProgressVtableGetWindowFunc get_window;
 
   /* Padding for future expansion. Must be initialized with NULL! */
   void (* _gimp_reserved1) (void);